I think this is either very not well understood or I am missing an old brace news.
They did not alter any link.
They however were proposing an auto complete, when the user was typing a crypto currency website name, with their affiliate link. https://brave.com/referral-codes-in-suggested-sites/.
They did not modify any link the user imput without autocomplete or through a search engine. (also it’s fixed).
Maybe I’m mistaken you are talking of something else.
On the website :
However proton Vpn în their app, they have a “wireguard TCP” setting.
Which is also confusing as on their wireguard marketing page, there is a faq where they say openvpn supports tcp in a ways as it supports TCP but not wireguard.